Relations between the two countries have thawed recently after years of tensions.
Sept. 27, 2013: Iranian President Hassan Rouhani was on his way to John F. Kennedy International Airport in New York when the phone rang in his car. President Obama was on the line from the Oval Office, and the two men spoke for 15 minutes, ending a decades-long diplomatic freeze. No U.S. leader had spoken with an Iranian president since the Islamic revolution ousted the U.S.-backed shah in 1979. Pete Souza/via Getty Images Buy Photo